We were divided in groups of two, one guy played the wheelchair user, the other the caretaker. We made a day trip by rail to the lovely town of Bamberg.
Our task was to observe how people react to us and write it down in a report from the perspective of the wheelchair user and the caregiver respectively. The day after we discussed our reports in the group.
One thing I remember is, how much physical strength it requires in your arms to drive up an incline and the fear of rolling backwards, maybe even toppling backwards and hitting the ground with your head. The other that trains and stations were completely unprepared for wheelchairs in the 90s.
We did the blind experiment as well, but only for under an hour within our building. Here the caretakers were split into two groups and half of them were secretly told to let the blind guy run into a wall or over a step just once. Afterwards we had to discuss how that affected trust in the caregiver.
[1] This was not really meant to prepare us for our duties on the frontlines at hospitals and homes for the elderly, though in my case it helped a bit. The real reason was to uphold the Wehrgerechtigkeit - the idea that consciousness objectors are subject to the very same conditions as conscripts. In practice this idea fell short, because places for training were few and people randomly selected for it.